Perhaps you should try some spelling variations:
"support africa irrigation schemes." » "support africa irrigation scheme.", "support africa irrigation systems.", "support africa immigration schemes.", "support syria irrigation schemes.", "support drip irrigation schemes.", "supporting africa irrigation schemes.", "supply africa irrigation schemes.", "support price irrigation schemes."
"support trade integration series." » "support trade integration services.", "support trade interaction series.", "support trade integration server.", "support trainer integration series.", "export trade integration series.", "import trade integration series."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("support africa irrigation schemes.") or ("support trade integration series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("support africa irrigation schemes.") OR ("support trade integration series.")).
• Removing quotes may allow a broader search: (( support africa irrigation schemes. ) or ( support trade integration series. )).
• Adding a wildcard symbol may retrieve word variants: (("support africa irrigation schemes.") or ("support trade integration series."))*.